<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>导入外部样式表</title>
		<style>
			@import url("4.css");
		</style>
	</head>
	<body>
		<p>22</p>
		<p>33</p>
		<h1>22</h1>
	</body>
</html>
